I’m writing to let you know that I plan to step down as Dean of the Mellon College of Science at the end of this academic year. Next month, I will celebrate my 75th birthday, so this is a natural time for me to consider what lies ahead in my career. At the same time, the College has reached a natural point of transition. Together, we have built a great deal in both research and education. The College is now poised to rise to a yet higher level, a chapter that should be guided by a new dean who can lead the College for many years to come.

My immediate goal is maintaining the College’s momentum while offering any help I can to ensure a smooth transition. I have told Provost Jahanian that I am willing to serve until the search is complete and a new dean is appointed. The Provost will be communicating with you directly about the search as it develops. With all of that in mind, I’ll be refocusing my time and effort on my research activities and education in my role as Buhl Professor of Theoretical Physics. I also hope to continue to help the College identify and secure external support in the years to come.

I want to thank so many of you who have helped me directly while serving as Dean by leading and participating in initiatives, serving on committees, and offering me your insights and perspectives. I also want to thank every one of you for the work you do, every day, for the College and for Carnegie Mellon. I’m very proud to have been a part of what MCS has accomplished in recent years, and I look forward to being a part of the next chapter.